8135523655 has 24 divisors (see below), whose sum is σ = 12024564048. Its totient is φ = 5250486528.

The previous prime is 8135523601. The next prime is 8135523659. The reversal of 8135523655 is 5563255318.

It is not a de Polignac number, because 8135523655 - 2⁷ = 8135523527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8135523659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 972489 + ... + 980818.

It is an arithmetic number, because the mean of its divisors is an integer number (501023502).

Almost surely, 2^8135523655 is an apocalyptic number.

8135523655 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

8135523655 is a deficient number, since it is larger than the sum of its proper divisors (3889040393).

8135523655 is a wasteful number, since it uses less digits than its factorization.

8135523655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1953343 (or 1953336 counting only the distinct ones).

The product of its digits is 540000, while the sum is 43.

The square root of 8135523655 is about 90197.1377317485. The cubic root of 8135523655 is about 2011.2304582849.

The spelling of 8135523655 in words is "eight billion, one hundred thirty-five million, five hundred twenty-three thousand, six hundred fifty-five".